Home / 91,720.36-137,580.72-25,161.44

Finding the Fourth Proportional to 91,720.36, 137,580.72 and 25,161.44

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Solution

The fourth proportional to 91,720.36, 137,580.72 and 25,161.44 is: 37,742.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.36 : 137,580.72 = 25,161.44 : x
  2. Step 2: Convert to fraction form
    91,720.36/137,580.72 = 25,161.44/x
  3. Step 3: Cross multiply
    91,720.36x = 137,580.72 × 25,161.44
  4. Step 4: Simplify right side
    91,720.36x = 3,461,729,031.44
  5. Step 5: Solve for x
    x = 3,461,729,031.44/91,720.36
  6. Step 6: Final answer
    x = 37,742.21

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.